document.write( "Question 140516: How do I find the rational zeros of this equation? \"3x%5E3%2B8x%5E2-3x-8\" \n" ); document.write( "
Algebra.Com's Answer #102300 by stanbon(75887)\"\" \"About 
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How do I find the rational zeros of this equation? \"3x%5E3%2B8x%5E2-3x-8\"
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\n" ); document.write( "Since the coefficients add up to zero, x=1 is a root of the statement:
\n" ); document.write( "Use synthetic division to find the quotient.
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\n" ); document.write( "1)....3....8....-3....-8
\n" ); document.write( ".......3....11....8..|..0\r
\n" ); document.write( "\n" ); document.write( "Quotient: x^2 + 11x + 8
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\n" ); document.write( "Use the quadratic formula to find the remaining zeroes:
\n" ); document.write( "x = [-11 +- sqrt(121 -4*1*8)]/2\r
\n" ); document.write( "\n" ); document.write( "x = [-11 +- sqrt(89)]/2\r
\n" ); document.write( "\n" ); document.write( "x = [-11+sqrt(89)]/2 or x = [-11-sqrt(89)]/2
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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